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Finding the Fourth Proportional to 556,714.80, 835,072.20 and 476,998.65

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Solution

The fourth proportional to 556,714.80, 835,072.20 and 476,998.65 is: 715,497.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,714.80 : 835,072.20 = 476,998.65 : x
  2. Step 2: Convert to fraction form
    556,714.80/835,072.20 = 476,998.65/x
  3. Step 3: Cross multiply
    556,714.80x = 835,072.20 × 476,998.65
  4. Step 4: Simplify right side
    556,714.80x = 398,328,312,052.53
  5. Step 5: Solve for x
    x = 398,328,312,052.53/556,714.80
  6. Step 6: Final answer
    x = 715,497.98

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.